711. Zn(s)/Zn+2(aq) 1M | | Cu+2(aq) 1M/Cu(s) is representation of reaction in______________?
A. Daniel cell
B. Downs cell
C. Voltaic cell
D. Nelsons cell
712. Voltaic cell can be recharged by______________?
A. by addition of fresh solution
B. by replacing external circuit with external source of electricity
C. by removal of solution
D. by heating it
713. H2 gas in SHE is filled at pressure of___________________?
A. 760mm of Hg
B. 750mm of Hg
C. 780mm of Hg
D. 800mm of Hg
714. Chemical used in salt bridge is________________?
A. KOH
B. KCI
C. KNO3
D. KBr
715. List of elements based on hydrogen scale is called________________?
A. periodic table
B. groups
C. periods
D. electrochemical series
716. In galvanic cell Zn acts as an anode so its value of standard reduction potential in comparison to coupled electrode would be________________?
A. greater
B. lesser
C. sum of reduction and oxidation potentials
D. none
717. Greater value of standard reduction potential smaller will be tendency______________?
A. to form positive ions
B. to form negative ions
C. gain electrons
D. all are possible
718. Lead accumulators are_______________?
A. secondary cell
B. primary cell
C. voltaic cell
D. both A & C
719. Capacity of one lead accumulator cell is___________________?
A. 1.5 volts
B. 2 volts
C. 3 volts
D. 1 volts
720. The strength of solution of an element whose electrode potential is to be measured is________________?
A. 2M
B. 1N
C. 1m
D. 1M